in this paper, design and construction of a tactile sensor for measuring contact-force is presented. mechanism of measuring contact-force in this tactile sensor is based on impedance changing of piezoelectric crystal and voltage of different points in circuit as a result of applying force on the crystal. by considering a specific point in the circuit and recording the changes of its voltage, ma...

Over the past decade, sensor networks have consistently been a focus of the computer research community, and a large number of prototypes have been built for military and civilian applications. One of the fundamental research issues of sensor networks is the energy scarcity problem. Due to the nature of sensor networks, e.g., small-size sensor nodes and large-scale deployment, sensor nodes cann...

The substrate N1, N3, N5-tris(2-hydroxyphenyl)benzene-1,3,5-tricarboxamide (Sensor A) was prepared in the reaction of 1,3,5-benzenetricarboxylic acid (trimesic acid) and o-aminophenol ethanol. organic sensor fulfills chemiluminescent requirements including a luminophore, spacer, suitable binding receptor that distress probe’s luminescent features, providing selective sensitive detection mercury...

Non-acoustic speech sensors can be employed to obtain measurements of one or more aspects of the speech production process, such as glottal activity, even in the presence of background noise. These sensors have a long history of clinical applications and have also recently been applied to the problem of denoising speech signals recorded in acoustically noisy environments (Ng et al 2000 Proc. In...